how to use Shoulda to test to controller and new AR creation in Rails?

I am new to using Shoulda and don't know where to begin.

One of the things I want to be able to test is when I create a new record for a given Model, the controller is supposed to then create new records for another model that is related.

How do I make this in Shoulda?

Here is what happens when I create a new record for Email:

  def create
 29     @campaign = Campaign.find(params[:campaign_id])
开发者_如何转开发 30     @email = @campaign.emails.build(params[:email])
 31     if @email.save
 32       @email.new_todos # create todos across all contacts for this asset
 33       flash[:notice] = "Successfully created email."
 34       #redirect_to campaign_url(@campaign)
 35       redirect_to :back
 36     else
 37       render :action => 'new'
 38     end
 39   end

'@email.new_todos" creates new records for model Todo, which is an extension added across all the models, such as Email:

  def create
 29     @campaign = Campaign.find(params[:campaign_id])
 30     @email = @campaign.emails.build(params[:email])
 31     if @email.save
 32       @email.new_todos # create todos across all contacts for this asset
 33       flash[:notice] = "Successfully created email."
 34       #redirect_to campaign_url(@campaign)
 35       redirect_to :back
 36     else
 37       render :action => 'new'
 38     end
 39   end

I would like to slowly start incorporating tests and am picking key types of behavior where it seems likely to break down to learn how to do it.

Thanks.

---

This example is better suited to a unit test. Although you're triggering the action in a controller, the logic is in the model.

Shoulda adds convenience features to Test::Unit. Things like contexts and matchers.

I'd test this like so:

context '.new_todos' do
  setup do
    @campaign = Campaign.create(:name => 'My Campaign')
    @email = @campaign.emails.build(:subject => 'Test Campaign Email')
    @email.save
    @email.new_todos
  end

  should 'generate todos for all contacts' do
    assert @email.todos.count > 0
  end
end

Obviously the sample attributes would need to change and you'll want to ensure you're getting the desired result (I guessed and used @email.todos), but it's a start. I'll be happy to update if you can try that out and see what happens.

To test this in the controller, you'll want a functional or integration test. Functional tests are pretty easy with shoulda, too. That would look something like this:

context 'POST to :create' do
  setup do
    @campaign = Campaign.create(:name => 'My Campaign')
    @email = 'test@test.com' # or whatever data you're expecting
    post :create, :campaign_id => @campaign.id, :email => @email
  end

  should respond_with(:redirect)
  should redirect_to('/some/path')
end

That's a start. Good luck!